Various Ways to Charge for Beverages:
Individual Drink Price
Collecting cash or a ticket when each drink is sold
Bottle Charge
Charging on a by-bottle basis for each bottle consumed and/or opened
Per-Person Charge
Charging a specific price for beverages based on attendance at the event
Hourly Charge
Charging the host a specific price for each hour of beverage service
Specific Per-Event Charge
Using hours of beverage service; charging number of drinks per hour times number of guests